linux-kernel - sharing an interrupt between a cascaded/chained pic and another device

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Message-Id: <0D5BDAF5-E5FD-42FC-977C-B83664FE4C78@kernel.crashing.org>
Date:	Tue, 27 Jan 2009 08:57:54 -0600
From:	Kumar Gala <galak@...nel.crashing.org>
To:	tglx@...utronix.de, mingo@...e.hu
Cc:	linux-kernel Kernel <linux-kernel@...r.kernel.org>,
	Peters Ted <Ted.Peters@...escale.com>,
	linuxppc-dev list <linuxppc-dev@...abs.org>
Subject: sharing an interrupt between a cascaded/chained pic and another device

Thomas, Ingo,

Do we have any support in the kernel today to deal with a IRQ on the  
root PIC being used for both a chained PIC and shared with another HW  
device.  We have a board that guys went and did it and as I look at  
the kernel code it doesn't seem like this crazy situation is currently  
supported.

- k
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